AR-133 Active DI Box description:

With added functionality and enhanced audio performance, the AR-133
has been designed to be more affordable for musicians, studios and
PA companies.

The unit includes phantom power and battery supplies as
standard. Should the phantom power from the console fail or be
accidentally switched off, the AR-133 automatically switches over
to the internal 9V battery providing uninterrupted use.

The unit is housed in a rugged aluminum extrusion case, with
robust polyurethane end- cheeks, which give the AR-133 a very
distinctive look. Input connectors are both 1/4" jack sockets and
an XLR socket, the latter meaning that the AR-133 can be used to
convert unbalanced signals to a balanced output on XLRs
throughout.The arched case allows cables to run back underneath the
unit from the end for neat cable management.

Input attenuation is 0, - 20 or -40dB, making the box suitable
for instrument, line or amplifier levels on inputs. On the output
side, a ground-lift switch is provided for quick solutions to
ground loop problems.

The AR-133 uses an enhanced version of the same audio path as
the AR-116, now regarded by many people as a reference standard.
The sound quality is legendary, particularly on acoustic and bass
guitars.

Numerous applications can be satisfied by the AR-133. For
example, as well as the traditional guitar use, the AR-133 can be
used with keyboards, DJ consoles, amplifier outputs, and other
electronic sources.

An additional bonus is the ability to use the AR-133 as an
active balancing device.